Eighteen Sound 21LW1400

Eighteen Sound 21LW1400
General Specifications Datasheet
Brand Eighteen Sound
Reference 21LW1400
Size 21 in
533 mm
Type Subwoofer
Impedance Z 8 Ω
Minimum impedance Zmin 6.4 Ω
Nominal Power P 1400 W
Program Power Pmax 1600 W
Sensitivity SPL 99 dB
Usable frequency range 24 - 2000 Hz
Recommended crossover 250 Hz
  • 99 dB SPL 1W / 1m average sensitivity
  • 100 mm (4 in) Interleaved Sandwich Voice coil (ISV)
  • 1400W AES power handling
  • Carbon fiber reinforced straight-ribbed cone
  • Double Silicon Spider (DSS) for improved excursion control and linearity
  • Double Demodulating Rings (DDR) for lower distortion
  • Improved heat dissipation via unique basket design
  • Weather protected cone and plates for outdoor usage
  • Suitable for ultra low frequency systems
Eighteen Sound 21LW1400 Frequency response
Eighteen Sound 21LW1400 Impedance
Thiele/Small parameters Values in gray are calculated.
Resonant frequency Fs 28 Hz
Surface area of cone Sd 1662 cm²
DC resistance Re 5 Ω
Mechanical Q Qms 9.32
Electromagnetic Q Qes 0.24
Total Q factor Qts 0.24
Mechanical suspension compliance Cms 98 µm/N
Compliance equivalent air volume Vas 385 liters
Moving mass Mmd 256.9 g
Moving mass (including airload) Mms 296 g
Mechanical resistance Rms 5.6 N·s/m
BL product BL 33.5 T·m
Voice coil inductance Le 2.85 mH
Maximum linear excursion (one way) Xmax 9.5 mm
Maximum mechanical limit (one way) Xlim 26 mm
Efficiency η₀ 3.98 %
Efficiency bandwidth product EBP 115
Effective diaphragm diameter Ø 46 cm
Import this driver in a simulation software:
WinISD 18Sound 21LW1400.wdr
Hornresp 18Sound 21LW1400.txt
Basta! 18Sound 21LW1400.bastaelement
Eighteen Sound 21LW1400 Dimensions
Dimensions
Overall diameter 545 mm
Baffle hole diameter 490 mm
Overall depth 259 mm
Flange thickness 14 mm
Net weight 17 kg
Materials of construction
Diaphragm material Carbon Fiber reinforced Paper
Diaphragm shape Straight
Surround material Polycotton
Voice Coil Parameters
Voice coil diameter 100 mm
Coil material Copper
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This page may contain errors or inaccuracies. Please check the up-to-date specifications on the manufacturer website before starting your project.

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